| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Sawada (十和田市) | 034-0302 |
| Postal/ZIP Codes in Tachizaki (十和田市) | 034-0103 |
| Postal/ZIP Codes in Takisawa (十和田市) | 034-0213 |
| Postal/ZIP Codes in Towadakohanyasumiya (十和田市) | 018-5501 |
| Postal/ZIP Codes in Toyogaoka (十和田市) | 034-0104 |
| Postal/ZIP Codes in Umaaraiba (十和田市) | 034-0101 |